WO2010049689A3 - Control of a shape memory alloy actuation arrangement - Google Patents

Control of a shape memory alloy actuation arrangement Download PDF

Info

Publication number
WO2010049689A3
WO2010049689A3 PCT/GB2009/002570 GB2009002570W WO2010049689A3 WO 2010049689 A3 WO2010049689 A3 WO 2010049689A3 GB 2009002570 W GB2009002570 W GB 2009002570W WO 2010049689 A3 WO2010049689 A3 WO 2010049689A3
Authority
WO
WIPO (PCT)
Prior art keywords
resistance
sma actuator
sma
basis
drive
Prior art date
Application number
PCT/GB2009/002570
Other languages
French (fr)
Other versions
WO2010049689A2 (en
Inventor
Thomas Matthew Gregory
Robert John Leedham
David Charles William Richards
Richard Topliss
Original Assignee
Cambridge Mechatronics Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB0819774A external-priority patent/GB0819774D0/en
Priority claimed from GBGB0821209.4A external-priority patent/GB0821209D0/en
Priority claimed from GBGB0822233.3A external-priority patent/GB0822233D0/en
Application filed by Cambridge Mechatronics Limited filed Critical Cambridge Mechatronics Limited
Priority to JP2011533812A priority Critical patent/JP5548211B2/en
Priority to US13/126,401 priority patent/US8448435B2/en
Priority to EP09752887A priority patent/EP2342459B1/en
Publication of WO2010049689A2 publication Critical patent/WO2010049689A2/en
Publication of WO2010049689A3 publication Critical patent/WO2010049689A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
    • F03G7/065—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like using a shape memory element
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lens Barrels (AREA)
  • Adjustment Of Camera Lenses (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

An SMA actuation apparatus comprises: an SMA actuator arranged to drive movement of a movable element; a current supply supplying a drive current; a detection circuit detecting a measure of the resistance of the SMA actuator; and a control unit operative to generate a closed-loop control signal supplied to current supply for controlling the power of the drive current to drive the resistance of the SMA actuator to a target value. The control unit derives: an estimate of a characteristic temperature of the SMA actuation apparatus on the basis of the supplied power, using a thermal model; and a resistance offset on the basis thereof. The closed-loop control signal is generated on the basis of the error between the measure of the resistance of the SMA actuator and the target value of the resistance of the SMA actuator, adjusted by the resistance offset to compensate for variations in resistance.
PCT/GB2009/002570 2008-10-29 2009-10-29 Control of a shape memory alloy actuation arrangement WO2010049689A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2011533812A JP5548211B2 (en) 2008-10-29 2009-10-29 Control of shape memory alloy actuator device
US13/126,401 US8448435B2 (en) 2008-10-29 2009-10-29 Control of a shape memory alloy actuation arrangement
EP09752887A EP2342459B1 (en) 2008-10-29 2009-10-29 Control of a shape memory alloy actuation arrangement

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB0819774A GB0819774D0 (en) 2008-10-29 2008-10-29 SMA control algorithm improvememts
GB0819774.1 2008-10-29
GBGB0821209.4A GB0821209D0 (en) 2008-11-20 2008-11-20 SMA control
GB0821209.4 2008-11-20
GBGB0822233.3A GB0822233D0 (en) 2008-12-05 2008-12-05 SMA control
GB0822233.3 2008-12-05

Publications (2)

Publication Number Publication Date
WO2010049689A2 WO2010049689A2 (en) 2010-05-06
WO2010049689A3 true WO2010049689A3 (en) 2011-02-24

Family

ID=42129367

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2009/002570 WO2010049689A2 (en) 2008-10-29 2009-10-29 Control of a shape memory alloy actuation arrangement

Country Status (4)

Country Link
US (1) US8448435B2 (en)
EP (1) EP2342459B1 (en)
JP (1) JP5548211B2 (en)
WO (1) WO2010049689A2 (en)

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JP5771375B2 (en) * 2010-08-31 2015-08-26 オリンパス株式会社 Method and apparatus for controlling shape memory alloy wire actuator
US8866918B2 (en) 2010-09-22 2014-10-21 Cambridge Mechatronics Limited Optical image stabilisation
US20120197442A1 (en) * 2011-01-26 2012-08-02 University Of Florida Research Foundation Inc. Method and apparatus for improving shock resistance of mems structures
CN103814200B (en) * 2011-09-20 2016-08-17 丰田自动车株式会社 The control device of internal combustion engine
US9753300B2 (en) * 2012-02-16 2017-09-05 Cambridge Mechatronics Limited Shape memory alloy actuation apparatus
EP2732331B1 (en) * 2012-05-25 2015-06-24 Cambridge Mechatronics Limited Shape memory alloy actuation apparatus
DE102012020310B4 (en) * 2012-10-16 2014-05-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for position control of an actuator, actuator and computer program storage medium
GB201220485D0 (en) 2012-11-14 2012-12-26 Cambridge Mechatronics Ltd Control of an SMA actuation apparatus
US9829304B2 (en) * 2013-05-21 2017-11-28 GM Global Technology Operations LLC Sensorless position control of active-material actuators
CN104902162B (en) * 2014-03-03 2019-03-29 联想(北京)有限公司 A kind of information processing method and electronic equipment
CN104902160B (en) * 2014-03-03 2018-10-12 联想(北京)有限公司 A kind of information processing method and electronic equipment
GB201521632D0 (en) 2015-12-08 2016-01-20 Cambridge Mechatronics Ltd Tilt compensation in an SMA actuator
CN105548238A (en) * 2015-12-25 2016-05-04 江阴法尔胜佩尔新材料科技有限公司 Non-contact completely-free-recovery part austenite recovery ending temperature measurement system
GB201610039D0 (en) 2016-06-08 2016-07-20 Cambridge Mechatronics Ltd Dynamic centring of SMA actuator
JP6665723B2 (en) * 2016-07-27 2020-03-13 株式会社デンソー Actuator, sensor device, and control device
GB201815218D0 (en) * 2018-09-18 2018-10-31 Cambridge Mechatronics Ltd Methods for controlling sma actuators
JP7190922B2 (en) * 2019-01-30 2022-12-16 旭化成エレクトロニクス株式会社 Control device and control method

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WO2003012384A2 (en) * 2001-07-27 2003-02-13 Mide Technology Corporation Method and device for measuring strain using shape memory alloy materials
WO2005026539A2 (en) * 2003-09-05 2005-03-24 Alfmeier Präzision Apparatus and method for low cost control of shape memory alloy actuators
EP1914422A1 (en) * 2005-08-11 2008-04-23 Konica Minolta Opto, Inc. Drive device, lens barrel, imaging device, lens drive method, and method of producing shape memory alloy
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Also Published As

Publication number Publication date
JP5548211B2 (en) 2014-07-16
EP2342459A2 (en) 2011-07-13
JP2012506971A (en) 2012-03-22
US8448435B2 (en) 2013-05-28
EP2342459B1 (en) 2012-09-19
WO2010049689A2 (en) 2010-05-06
US20110277462A1 (en) 2011-11-17

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